Patents by Inventor Toru Matsunobu

Toru Matsunobu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190261023
    Abstract: An image coding method including: binarizing last position information to generate (i) a binary signal which includes a first signal having a length smaller than or equal to a predetermined maximum length and does not include a second signal or (ii) a binary signal which includes the first signal having the predetermined maximum length and the second signal; first coding for arithmetically coding each of binary symbols included in the first signal using a context switched among a plurality of contexts according to a bit position of the binary symbol; and second coding for arithmetically coding the second signal using a fixed probability when the binary signal includes the second signal, wherein in the first coding, a binary symbol at a last bit position of the first signal is arithmetically coded using a context exclusive to the last bit position, when the first signal has the predetermined maximum length.
    Type: Application
    Filed: May 6, 2019
    Publication date: August 22, 2019
    Inventors: Hisao SASAI, Takahiro NISHI, Youji SHIBAHARA, Toshiyasu SUGIO, Kyoko TANIKAWA, Toru MATSUNOBU, Kengo TERADA
  • Publication number: 20190261017
    Abstract: An image coding method includes: deriving a candidate for a motion vector of a current block from a co-located motion vector; adding the candidate to a list; selecting the motion vector of the current block from the list; and coding the current block, wherein the deriving includes: deriving the candidate by a first derivation scheme in the case of determining that each of a current reference picture and a co-located reference picture is a long-term reference picture; and deriving the candidate by a second derivation scheme in the case of determining that each of the current reference picture and the co-located reference picture is a short-term reference picture.
    Type: Application
    Filed: April 30, 2019
    Publication date: August 22, 2019
    Inventors: Viktor WAHADANIAH, Chong Soon LIM, Sue Mon Thet NAING, Hai Wei SUN, Takahiro NISHI, Hisao SASAI, Youji SHIBAHARA, Kyoko TANIKAWA, Toshiyasu SUGIO, Kengo TERADA, Toru MATSUNOBU
  • Patent number: 10390041
    Abstract: An image coding method includes: determining a first temporal distance between a current picture to be coded and a first reference picture; determining a second temporal distance between the first reference picture and a second reference picture; judging whether or not the first temporal distance and the second temporal distance satisfy a predetermined condition, and calculating a first weight for the first reference picture and a second weight for the second reference picture based on a result of the judgment; and generating a predictive image for the current block by adding a first block included in the first reference picture and a second block included in the second reference picture, the first block being weighted by the first weight, and the second block being weighted by the second weight.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: August 20, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Toshiyasu Sugio, Takahiro Nishi, Youji Shibahara, Kyoko Tanikawa, Hisao Sasai, Toru Matsunobu, Kengo Terada
  • Patent number: 10390043
    Abstract: An image coding method includes: writing, into a coded bitstream, buffer description defining information for defining a buffer description; constructing a default reference list; reorder pictures included in the default reference list; writing, into the coded bitstream, reference list reordering information for indicating details of the reordering; and coding an image using the buffer description and a reference list resulting from the reordering, and in the reference list reordering information, among the pictures, a picture to be reordered is specified using an index which is used in other processing in the image coding method.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: August 20, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Viktor Wahadaniah, Chong Soon Lim, Sue Mon Thet Naing, Hai Wei Sun, Takahiro Nishi, Hisao Sasai, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu, Kengo Terada
  • Publication number: 20190251743
    Abstract: A display method is a display method performed by a display device that operates in conjunction with a mobile object, and includes: determining which one of first surrounding information, which is video showing a surrounding condition of the mobile object and is generated using two-dimensional information, and second surrounding information, which is video showing the surrounding condition of the mobile object and is generated using three-dimensional data, is to be displayed, based on a driving condition of the mobile object; and displaying the one of the first surrounding information and the second surrounding information that is determined to be displayed.
    Type: Application
    Filed: April 23, 2019
    Publication date: August 15, 2019
    Inventors: Tatsuya KOYAMA, Takahiro NISHI, Toshiyasu SUGIO, Tadamasa TOMA, Satoshi YOSHIKAWA, Toru MATSUNOBU
  • Publication number: 20190253723
    Abstract: An image coding method in which a chroma component and a luma component of an input image including one or more transform blocks are transformed to code the input image. The luma component has the same size as the current transform block. The chroma component is smaller than the current transform block. In the method, when the current transform block has a first minimum size, the chroma component is transformed on a basis of a block resulting from binding a plurality of the chroma blocks to has the same size as the luma block, and when the current transform block has a size other than the first minimum size, a CBF flag indicating whether or not coefficients of the chroma component include a non-zero coefficient is not coded.
    Type: Application
    Filed: April 22, 2019
    Publication date: August 15, 2019
    Inventors: Kengo TERADA, Youji SHIBAHARA, Kyoko TANIKAWA, Hisao SASAI, Toshiyasu SUGIO, Toru MATSUNOBU
  • Publication number: 20190253715
    Abstract: A moving picture coding apparatus includes an intra-inter prediction unit which calculates a second motion vector by performing a scaling process on a first motion vector of a temporally neighboring corresponding block, when selectively adding, to a list, a motion vector of each of one or more corresponding blocks each of which is either a block included in a current picture to be coded and spatially neighboring a current block to be coded or a block included in a picture other than the current picture and temporally neighboring the current block, determines whether the second motion vector has a magnitude that is within a predetermined magnitude or not within the predetermined magnitude, and adds the second motion vector to the list when the intra-inter prediction unit determines that the second motion vector has a magnitude that is within the predetermined magnitude range.
    Type: Application
    Filed: April 23, 2019
    Publication date: August 15, 2019
    Inventors: Toshiyasu Sugio, Takahiro Nishi, Youji Shibahara, Kyoko Tanikawa, Hisao Sasai, Toru Matsunobu, Kengo Terada
  • Patent number: 10382779
    Abstract: An image coding method includes coding a motion vector difference indicating a difference between the motion vector and a predicted motion vector, wherein the coding includes: coding a first portion that is a part of a first component which is one of a horizontal component and a vertical component of the motion vector difference; coding a second portion that is a part of a second component which is different from the first component and is the other one of the horizontal component and the vertical component; coding a third portion that is a part of the first component and is different from the first portion; coding a fourth portion that is a part of the second component and is different from the second portion; and generating a code string which includes the first portion, the second portion, the third portion, and the fourth portion in the stated order.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: August 13, 2019
    Assignee: Velos Media, LLC
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu
  • Patent number: 10382760
    Abstract: The image coding method includes: determining a context in a current block in the image, from among a plurality of contexts; and performing arithmetic coding on the control parameter for the current block to generate a bitstream corresponding to the current block, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is (i) “merge_flag”, (ii) “ref_idx_l0” or “ref_idx_l1”, (iii) “inter_pred_flag”, (iv) “mvd_l0” or “mvd_l1”, (v) “no_residual_data_flag”, (vi) “intra_chroma_pred_mode”, (vii) “cbf_luma”, and (viii) “cbf_cb” or “cbf_cr”.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: August 13, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu
  • Publication number: 20190246132
    Abstract: An image decoding method includes: dividing a current block into sub-blocks; deriving, for each sub-block, one or more prediction information candidates; obtaining an index; and decoding the current block using the prediction information candidate selected by the index.
    Type: Application
    Filed: April 17, 2019
    Publication date: August 8, 2019
    Inventors: Toshiyasu SUGIO, Takahiro NISHI, Youji SHIBAHARA, Kyoko TANIKAWA, Hisao SASAI, Toru MATSUNOBU, Kengo TERADA
  • Publication number: 20190246140
    Abstract: A method for coding multiple binary data into a bitstream is disclosed. The method splits each of four luma binary data into a luma context-dependent segment and a luma context-independent segment, and splits one chroma binary data into a chroma context-dependent segment and a chroma context-independent segment. The method groups first coded data including four coded luma context-dependent segments, second coded data including four coded luma context-independent segments and third coded data including a coded chroma context-dependent segment and a coded chroma context-independent segment. The method further performs, separately, context adaptive binary arithmetic coding on the first coded data and the chroma context-dependent segment using a variable probability. The method also performs, separately, bypass coding on the second coded data and the chroma context-independent segment using a fixed probability.
    Type: Application
    Filed: April 15, 2019
    Publication date: August 8, 2019
    Applicant: Sun Patent Trust
    Inventors: Hisao SASAI, Takahiro NISHI, Youji SHIBAHARA, Toshiyasu SUGIO, Kyoko TANIKAWA, Toru MATSUNOBU
  • Publication number: 20190238876
    Abstract: An image coding method for coding an image on a block-by-block basis, includes: selecting, for each of a plurality of sub-blocks included in a coding-target block and each including a plurality of coefficients, a context for performing arithmetic coding on a parameter indicating a coding-target coefficient included in the sub-block from a context set corresponding to the sub-block, based on at least one reference coefficient located around the coding-target coefficient, the coding-target block being a transform unit; and performing arithmetic coding on the parameter indicating the coding-target coefficient using probability information about the selected context, wherein, in the selecting, the context is selected from the context set, the context set corresponding to a sum of (i) a value indicating a position in a horizontal direction of the sub-block in the coding-target block and (ii) a value indicating a position in a vertical direction of the sub-block in the coding-target block.
    Type: Application
    Filed: April 11, 2019
    Publication date: August 1, 2019
    Inventors: Kengo TERADA, Takahiro NISHI, Youji SHIBAHARA, Kyoko TANIKAWA, Hisao SASAI, Toshiyasu SUGIO, Toru MATSUNOBU
  • Patent number: 10368085
    Abstract: A method of performing motion vector prediction for a current block in a picture is provided which includes: deriving a candidate for a motion vector predictor to code a current motion vector of the current block, from a first motion vector of a first block that is spatially adjacent or temporally adjacent to the current block; adding the derived candidate to a list of candidates; and deriving at least one motion vector predictor based on a selected candidate from the list of candidates, wherein the deriving of the candidate includes determining whether to derive the candidate from the first motion vector, based on a type of a current reference picture and a type of a first reference picture, the current reference picture being referred to from the current block using the current motion vector, the first reference picture being referred to from the first block using the first motion vector.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: July 30, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Chong Soon Lim, Sue Mon Thet Naing, Takahiro Nishi, Hisao Sasai, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu, Kengo Terada
  • Publication number: 20190230351
    Abstract: A moving picture coding method includes: performing context adaptive binary arithmetic coding in which a variable probability value is used, on first information among multiple types of sample adaptive offset (SAO) information used for SAO that is a process of assigning an offset value to a pixel value of a pixel included in an image generated by coding the input image; and continuously performing bypass arithmetic coding in which a fixed probability value is used, on second information and third information among the multiple types of the SAO information, wherein the coded second and third information are placed after the coded first information in the bit stream.
    Type: Application
    Filed: April 4, 2019
    Publication date: July 25, 2019
    Inventors: Hisao SASAI, Kengo TERADA, Youji SHIBAHARA, Kyoko TANIKAWA, Toshiyasu SUGIO, Toru MATSUNOBU
  • Publication number: 20190230378
    Abstract: Obtaining one or more motion vector predictor candidates includes: (a1) generating a motion vector predictor candidate, based on motion vectors of first adjacent blocks adjacent to a block to be processed in a first direction; and (a2) generating a motion vector predictor candidate, based on motion vectors of second adjacent blocks adjacent to the block to be processed in a second direction, and step (a2) includes: determining whether the first adjacent blocks include an inter-predicted block; and searching for a motion vector on which scaling processing can be performed from among the motion vectors of the second adjacent blocks when it is determined that the first adjacent blocks do not include an inter-predicted block, and executing, when the motion vector on which scaling processing can be performed is obtained in the search, scaling processing on the motion vector obtained in the search.
    Type: Application
    Filed: March 28, 2019
    Publication date: July 25, 2019
    Inventors: Toshiyasu SUGIO, Takahiro NISHI, Youji SHIBAHARA, Kyoko TANIKAWA, Hisao SASAI, Toru MATSUNOBU, Kengo TERADA
  • Patent number: 10362324
    Abstract: An image coding method for coding an image on a block-by-block basis, includes: selecting, for each of a plurality of sub-blocks included in a coding-target block and each including a plurality of coefficients, a context for performing arithmetic coding on a parameter indicating a coding-target coefficient included in the sub-block from a context set corresponding to the sub-block, based on at least one reference coefficient located around the coding-target coefficient, the coding-target block being a transform unit; and performing arithmetic coding on the parameter indicating the coding-target coefficient using probability information about the selected context, wherein, in the selecting, the context is selected from the context set, the context set corresponding to a sum of (i) a value indicating a position in a horizontal direction of the sub-block in the coding-target block and (ii) a value indicating a position in a vertical direction of the sub-block in the coding-target block.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: July 23, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Kengo Terada, Takahiro Nishi, Youji Shibahara, Kyoko Tanikawa, Hisao Sasai, Toshiyasu Sugio, Toru Matsunobu
  • Patent number: 10356429
    Abstract: The moving picture coding method for coding an input image includes: converting a value of a first parameter into a first binary signal, the first parameter identifying a type of a sample offset process to be applied to a reconstructed image corresponding to the input image; and coding at least a portion of the first binary signal through bypass arithmetic coding using a fixed probability.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: July 16, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Kengo Terada, Youji Shibahara, Kyoko Tanikawa, Hisao Sasai, Toshiyasu Sugio, Toru Matsunobu
  • Patent number: 10356183
    Abstract: An image photographing method for sharing a shared image, which is a plurality of images obtained by photographing an identical subject 103 with a plurality of cameras or an image generated from the plurality of images, between a plurality of users of the plurality of cameras, the image photographing method including: judging whether a target camera that is one of the plurality of cameras photographs subject 103 (S401); and allowing a user of the target camera to browse the shared image according to a period in which the target camera photographs subject 103 (S403) when the judgement that the target camera photographs subject 103 is made (Yes in S402).
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: July 16, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Youji Shibahara, Toshiyasu Sugio, Toru Matsunobu, Yuki Maruyama, Takahiro Nishi
  • Patent number: RE47537
    Abstract: The image decoding method includes: determining a context for use in a current block to be processed, from among a plurality of contexts; and performing arithmetic decoding on a bit sequence corresponding to the current block, using the determined context, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: July 23, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu
  • Patent number: RE47547
    Abstract: The image decoding method includes: determining a context for use in a current block to be processed, from among a plurality of contexts; and performing arithmetic decoding on a bit sequence corresponding to the current block, using the determined context, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: July 30, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu